DragonFly now runs on the Acer c720 (Haswell) Chromebook
Matthew Dillon
dillon at apollo.backplane.com
Tue Jan 7 13:22:44 PST 2014
This is the Intel haswell-based chromebook. DragonFly now runs on it.
I've got the boot loader, keyboard, wireless(g), and mouse working.
I will try to get wireless(n) working (might be easy).
You have to follow the linux instructions for enabling the BIOS to boot
non-chrome OS's:
https://wiki.archlinux.org/index.php/Acer_C7_Chromebook
Once you've done this you can install DragonFly on a usb stick. It is
also possible to wipe the internal SSD and install DFly there. If you
do that, be sure to build a chrome recovery usb stick (you'll have to
google that). You don't need a fancy gpt partition or anything...
the normal install should work with e.g. a 1G 'a' /boot partition and
the rest of it a 'd' root hammer partition.
For DragonFly to recognize the trackpad, in /boot/loader.conf:
if_ath_load="YES"
ig4_load="YES"
cyapa_load="YES"
And in /etc/X11/xorg.conf:
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "ps/2"
Option "Device" "/dev/cyapa0-67"
EndSection
For the wireless, in /etc/rc.conf:
wlans_ath0="wlan0"
ifconfig_wlan0="DHCP WPA"
And in /etc/wpa_supplicant.conf:
network={
ssid="SSIDGOESHERE"
scan_ssid=1
psk="PASSWORDGOESHERE"
priority=2
}
(additional network {} blocks)
Xorg will auto-config (doesn't need a xorg.conf). Use 'xorg --configure'
to generate a xorg.conf file and then move it to the correct place and
edit it to fixup the mouse.
--
Also, the internal SSD is only 16GB, so if you want to run off of
an internal SSD I'd recommend buying one and replacing it. I got
a 128G SSD and stuffed it in there. This is the M.2 FORM FACTOR,
*NOT* a standard SSD and not the intel micro SSD stuff.
Also suggested in /etc/sysctl.conf:
hw.cpu_mwait_halt=0x44
hw.cpu_mwait_spin=0x11
Other issues: DragonFly currently does not recognize USB plug/unplug
events on this laptop. Dunno how easy it would be to get that working,
but that means anything you plug in has to be plugged in at boot time.
Finally, note that DragonFly does not employ sleep mode when the cover
is closed (at least not yet, and it would be a while before we could do
it), so battery life is limited to the on-time life which will be
somewhere around 4-5 hours.
-Matt
Matthew Dillon
<dillon at backplane.com>
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